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Explain the Sub-Culturing?
Microbiological studies require microorganisms in pure form, i.e., a single type of microorganisms should be present in a culture. Maintenance of these pure cultures in laboratory is must. Preparation and maintenance of these pure cultures can be achieved by transfer of culture from one medium to another or from their parent growth source to another. The procedure is called sub-culturing. This technique is of basic importance and should be carried out by practicing aseptic technique. The term picking off is used when transfer is made from solid to liquid media.
Sublimation is the process by which solid water changes directly to vapour phase without passing through the intervening liquid phase. The gradual disappearance of flakes of ice
In one study of a heavily polluted area near Birmingham, England, a researcher observed a frequency of 87% melanic Biston betlularia. Calculate the frequency of the dominant allele
Explain the Process of Repositioning - Endodontic Surgery 1. Reposition the flap gently, 2. Approximate incision lines closely as possible 3. Pressure application "surgic
Explain the Parts of the Microscope? Microscope, as you may have noticed in Figure or for that matter even seen in a laboratory, is a metal body composed of a base and an arm t
C dna is made from a mature m rna of eukaryotic cell with the utilization of enzyme called as reverse transcriptase. Steps in c dna creation 1. m rna is made and purified f
Chromium Chromium functions as a component of the glucose tolerance factor, which serves to potentiate the action of insulin. Adding low concentrations (0.02 to 1.0 mg/kg) of c
When resheathing needles, simple precautions to prevent injuries are to: 1. use only one hand to scoop the cap 2. hold the sheath with a hemostat (suggested but will require
All or None Response A very weak stimulus does not result in an action potential. The stimulus must have a certain strength to evoke an excitation. This is the threshold value
Role of Biotic Factors Inducing Senescence Besides environmental and endogenous factors, biotic factors also play a role in inducing senescence. For example, due to an attack
Directional or progressive selection is the mode of selection associated with environmental change. We said earlier that in an unchanging environment stabilising selection removes
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